Windows 10 & Windows 8.1 No Longer Work

[brw11]

Since the latest Windows 10 and Windows 8.1 updates Sandboxie no longer works with Firefox, Internet Explorer or Chrome. Here's the info re. Firefox in Windows 10:

-Windows 10 Professional 64-bit Version 1703 with OS Build 15063.632 and all the latest updates as of 10/14/2017
-Sandboxie Version 5.20 64-bit (Registered)
-Firefox Version 56.0.1 64-bit

I don't always receive an error message but Firefox simply doesn't start up (also the other browsers). See attached image of what appears in the Sandboxie window when attempting to run Firefox.

Again, this only started happening with the latest Windows updates.

[Barb@Invincea]

Hello brw11,

Does the issue happen in a new Sandbox with default settings?
Do you have any Antivirus / security software installed?
Please give the latest beta a try:
viewtopic.php?p=129389#p129389

Regards,
Barb.-

[brw11]

I tried completely re-installing Sandboxie with default settings. I also disabled my Norton Security -- both the firewall and antivirus, but it didn't help. Note that the problem is on Windows 10 and Windows 8.1 computers but not Windows 7. And there was no problem at all until the latest October Windows updates on both 10 and 8.1.

[APMichael]

I tried completely re-installing Sandboxie with default settings.

As far as I know re-installing didn't delete the contents of the Sandboxes. Did you reboot and clean the Sandbox manually ("Delete Contents") already?

[Barb@Invincea]

All,

We already have a dedicated post for Norton 360 issues. Please, let's continue there so we can have all the info in one place:
viewtopic.php?p=130045#p130045

Regards,
Barb.-